Gonna be building one within the next year and need to hear from those who have actually built or priced a barn, or kit, or materials. Want to build a 30 x 50, I think. Would like a platform or loft above the tool/bench area for storage. 220 electric. Water. Anything other suggestions? Will soon start researching using the fuel oil boiler that I'm removing from the house to run the heated floor. What size and price have you built? How much is concrete running these days? Etc.